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When I try to attach the "FitnessTrackerPlus.mdf" file to my SQL Server 2008 Express, I get an error message saying roughly this:

The database (long-winded database name) cannot be opened because it is version 661.

I suspect the database files were created for full-blown SQL Servers 2008, and hence cannot be attached to weaker/older versions of the SQL Server. I believe the vast majority of users/readers doesn't have the luxury of the full-blown SQL Server 2008.

Can anybody create and upload database files that can be attached to a run-of-the-mill Express version.

Like others I bought the book but cannot open the database or run the samples. The fact that the database can't be opened using the software described in the "What You Need To Use This Book" is a huge oversight. Is anyone at Wrox doing something about this?

I am currently working on a solution to the problem. What happened was that I needed to revise the original code from the book in order to make everything work with the final Silverlight 4/RIA/Toolkit versions. Unfortunately I had already installed the R2 version of SQL Server 2008 Express.

It appears that the database is not backward compatible with previous versions of SQL Server Express.

I am currently working on providing create scripts as well as mdf files for the previous versions of SQL Express. I will post here again when it is available.

This book and the author have some excellent solutions which remain out of reach because Wrox and the author have been completely unresponsive over a long period of time to this issue. I have long been a proponent of Wrox books, but that is changing because of this.

The author should simply create a SQL script to create the database and post it so we can move forward with his book. It is a simple thing to do and I find it odd that he has not done so.